In the United States and some parts of English Canada, a "biscuit" is a savoury quick bread, somewhat similar to a scone, though sugar is not used in the dough. Leavening is achieved through the use of baking powder or when using buttermilk baking soda. Biscuits are usually referred to as either "baking powder biscuits"[4] or "buttermilk biscuits" if buttermilk is used rather than milk as a liquid. A Southern regional variation using the term "beaten biscuit" (or in New England "sea biscuit") is closer to hardtack than soft dough biscuits.[5]

The Middle French word bescuit is derived from the Latin words bis (twice) and coquere, coctus (to cook, cooked), and, hence, means "twice-cooked".[6] This is because biscuits were originally cooked in a twofold process: first baked, and then dried out in a slow oven.[7] This term was then adapted into English in the 14th century during the Middle Ages, in the Middle English word bisquite, to represent a hard, twice-baked product.[8]

However, the Dutch language from around 1703 had adopted the word koekje ("little cake") to have a similar meaning for a similar hard, baked product.[9] The difference between the secondary Dutch word and that of Latin origin is that, whereas the koekje is a cake that rises during baking, the biscuit, which has no raising agent, in general does not (see gingerbread/ginger biscuit), except for the expansion of heated air during baking.[citation needed]

When continental Europeans began to emigrate to colonial North America, the two words and their "same but different" meanings began to clash. After the American War of Independence, the words cookie or cracker became the words of choice to mean a hard, baked product. Further confusion has been added by the adoption of the word biscuit for a small leavened bread popular in the United States.

British cookery writer Elizabeth David noted in 1977 that the use of "biscuit" for a soft bread had continued in Scotland, e.g. short bread, in Guernsey and in North America, where such a product was common.[10]

Today, according to the American English dictionaryMerriam-Webster, a cookie is a "small flat or slightly raised cake".[9] A biscuit is "any of various hard or crisp dry baked product" similar to the American English terms cracker or cookie,[8] or "a small quick bread made from dough that has been rolled out and cut or dropped from a spoon".[8]

In a number of other European languages, terms derived from the latin bis coctus refer instead to yet another baked product, similar to the sponge cake; e.g. Spanish bizcocho, German Biskuitmasse, Russian бисквит (biskvit), Polish biszkopt.

In modern Italian usage, the term biscotto is used to refer to any type of hard twice-baked biscuit, and not only to the cantuccini as in the past.

The need for nutritious, easy-to-store, easy-to-carry, and long-lasting foods on long journeys, in particular at sea, was initially solved by taking live food along with a butcher/cook. However, this took up additional space on what were either horse-powered treks or small ships, reducing the time of travel before additional food was required. This resulted in early armies' adopting the style of hunter-foraging.

The introduction of the baking of processed cereals including the creation of flour provided a more reliable source of food. Egyptian sailors carried a flat, brittle loaf of millet bread called dhourra cake, while the Romans had a biscuit called buccellum.[11] Roman cookbook Apicius describes: "a thick paste of fine wheat flour was boiled and spread out on a plate. When it had dried and hardened, it was cut up and then fried until crisp, then served with honey and pepper."

Many early physicians believed that most medicinal problems were associated with digestion. Hence, for both sustenance and avoidance of illness, a daily consumption of a biscuit was considered good for health.

Hard biscuits soften as they age. To solve this problem, early bakers attempted to create the hardest biscuit possible. Because it is so hard and dry, if properly stored and transported, navies' hardtack will survive rough handling and high temperature. Baked hard, it can be kept without spoiling for years as long as it is kept dry. For long voyages, hardtack was baked four times, rather than the more common two.[12] To soften hardtack for eating, it was often dunked in brine, coffee, or some other liquid or cooked into a skillet meal.

At the time of the Spanish Armada in 1588, the daily allowance on board a Royal Navy ship was one pound of biscuit plus one gallon of beer. Samuel Pepys in 1667 first regularised naval victualling with varied and nutritious rations. Royal Navy hardtack during Queen Victoria's reign was made by machine at the Royal Clarence Victualling Yard at Gosport, Hampshire, stamped with the Queen's mark and the number of the oven in which they were baked. Biscuits remained an important part of the Royal Navy sailor's diet until the introduction of canned foods. Canned meat was first marketed in 1814; preserved beef in tins was officially added to Royal Navy rations in 1847.[11]

Early biscuits were hard, dry, and unsweetened. They were most often cooked after bread, in a cooling bakers' oven; they were a cheap form of sustenance for the poor.

By the seventh century AD, cooks of the Persian empire had learnt from their forebears the techniques of lightening and enriching bread-based mixtures with eggs, butter, and cream, and sweetening them with fruit and honey.[13] One of the earliest spiced biscuits was gingerbread, in French pain d'épices, meaning "spice bread", brought to Europe in 992 by the Armenian monk Grégoire de Nicopolis. He left Nicopolis Pompeii, of Lesser Armenia to live in Bondaroy, France, near the town of Pithiviers. He stayed there for seven years, and taught French priests and Christians how to cook gingerbread.[14][15][16] This was originally a dense, treaclely (molasses-based) spice cake or bread. As it was so expensive to make, early ginger biscuits were a cheap form of using up the leftover bread mix.

With the combination of the Muslim invasion of the Iberian Peninsula, and then the Crusades developing the spice trade, the cooking techniques and ingredients of Arabia spread into Northern Europe.[13] By mediaeval times, biscuits were made from a sweetened, spiced paste of breadcrumbs and then baked (e.g., gingerbread), or from cooked bread enriched with sugar and spices and then baked again.[17]King Richard I of England (aka Richard the Lionheart) left for the Third Crusade (1189–92) with "biskit of muslin", which was a mixed corn compound of barley, rye, and bean flour.[11]

As the making and quality of bread had been controlled to this point, so were the skills of biscuit-making through the craft guilds.[13] As the supply of sugar began, and the refinement and supply of flour increased, so did the ability to sample more leisurely foodstuffs, including sweet biscuits. Early references from the Vadstena monastery show how the Swedish nuns were baking gingerbread to ease digestion in 1444.[18] The first documented trade of gingerbread biscuits dates to the 16th century, where they were sold in monastery pharmacies and town square farmers markets. Gingerbread became widely available in the 18th century. The British biscuit firms of McVitie's, Carr's, Huntley & Palmer, and Crawfords were all established by 1850.[19]

Along with local farm produce of meat and cheese, many regions of the world have their own distinct style of biscuit due to the historic prominence of this form of food.

Biscuits today can be savoury or sweet, but most are small at around 5 cm (2.0 in) in diameter, and flat. The term biscuit also applies to sandwich-type biscuits, wherein a layer of "creme" or icing is sandwiched between two biscuits, such as the custard cream, or a layer of jam (as in biscuits which, in the United Kingdom, are known as "Jammie Dodgers")

Sweet biscuits are commonly eaten as a snack food, and are, in general, made with wheat flour or oats, and sweetened with sugar or honey. Varieties may contain chocolate, fruit, jam, nuts, ginger or even be used to sandwich other fillings.

In Britain, the digestive biscuit and rich tea have a strong cultural identity as the traditional accompaniment to a cup of tea, and are regularly eaten as such. Many tea drinkers "dunk" their biscuits in tea, allowing them to absorb liquid and soften slightly before consumption.[20] The best selling biscuit brand in the UK, McVitie's biscuits are the most popular biscuits to dunk in tea, with McVitie's chocolate digestives, Rich tea and Hobnobs ranked the nation's top three favourite biscuits in 2009.[20]

Savoury biscuits or crackers (such as cream crackers, water biscuits, oatcakes, or crisp breads) are usually plainer and commonly eaten with cheese following a meal. Other savoury biscuits include the Jewish biscuits known as matzos. Many savoury biscuits also contain additional ingredients for flavour or texture, such as poppy seeds, onion or onion seeds, cheese (such as cheese melts), and olives. Savoury biscuits also usually have a dedicated section in most European supermarkets, often in the same aisle as sweet biscuits. The exception to savoury biscuits is the sweetmeal digestive known as the "Hovis biscuit", which, although slightly sweet, is still classified as a cheese biscuit.[21] Savoury biscuits sold in supermarkets are sometimes associated with a certain geographical area, such as Scottish oatcakes or Cornish wafer biscuits.

In general, the British, Australians, South Africans, New Zealanders, Nigerians, Kenyans, Indians, Pakistanis, Sri Lankans, Singaporeans and the Irish use the British meaning of "biscuit" for the sweet biscuit, the terms biscuit and cookie are used interchangeably, depending on the region and the speaker, with biscuits usually referring to hard, sweet biscuits (such as digestives, Nice, Bourbon creams, etc.) and cookies for soft baked goods (i.e. chocolate chip cookies)[citation needed], In Canada this term is now used less frequently, usually with imported brands of biscuits or in the Maritimes; however the Canadian Christie Biscuits referred to what Americans would call crackers.[citation needed] This sense is at the root of the name of the United States' most prominent maker of cookies and crackers, the National Biscuit Company, now called Nabisco.

They are traditionally served as a side dish with a meal. As a breakfast item they are often eaten with butter and a sweet condiment such as molasses, light sugarcane syrup, maple syrup, sorghum syrup, honey, or fruit jam or jelly. With other meals they are usually eaten with butter or gravy instead of sweet condiments. However, biscuits and gravy (biscuits covered in country gravy) or biscuits with sausage are usually served for breakfast, sometimes as the main course.

^Except Newfoundland, where the British term is used and the American "biscuit" is virtually unheard of. Neither is a popular food item in the province.[citation needed]

^"cookie". Oxford English Dictionary. Oxford University Press. In Scotland the usual name for a baker's plain bun; in U.S. usually a small flat sweet cake (a biscuit in U.K.), but locally a name for small cakes of various form with or without sweetening. Also S. Afr. and Canad.

^David, Elizabeth (17 Nov 1977). "Yeast Buns and Small Tea Cakes". English Bread and Yeast Cookery. Illustrated by Wendy Jones (1 ed.). Allen Lane. sec. "Soft Biscuits". ISBN978-0713910261. It is interesting that these soft biscuits are common to Scotland and Guernsey, and that the term biscuit as applied to a soft product was retained in these places, and in America, whereas in England it has completely died out.